Consists of the records (1760-1974) of a large business conglomerate in northern Mexico founded by Pedro R. Prieto and owned by branches of the Prieto family, including Maíz family members, for three generations.

The first report presents a chart method for calculating the characteristics of a reactor. The second report offers a set of universal curves which could be used to find the characteristics more easily. The third report describes in more detail two specific uses of the universal curves which were not covered in the second report, namely calculation of the d-c flux linkages in the reactor and calculations of problems involving rectifiers.

Consists of approximately 701 flat works from the collections of the Princeton University Art Museum, temporarily transferred to the Princeton University Library for use in Princeton University courses during the Spring 2023 semester.

Consists of several hundred print photographs (most are captioned) primarily from various French news outlets and agencies documenting people and events of numerous countries and geographic regions spanning the mid to late 20th century.

The papers comprise documents relating to all periods of the life of Kurt Gödel, foremost mathematical logician of the twentieth century, including scientific correspondence, notebooks, drafts, unpublished manuscripts, academic, legal, and financial records, and all manner of loose notes and memoranda.

Consists of research files, primarily government records, of scholar and author Jacques Roumani (1944-2016) on Libya during the period of Italian colonization.

Consists of a photograph album, loose photographs, and clippings belonging to Robert J. Sommers (1881-1972), primarily documenting his work as a highway engineer in Alaska in the late 1920s, as well as some materials related to his personal life and career as a civil engineer and businessman involved in construction. Of note is a photograph album documenting a tour of Alaska made in 1928 by Sommers with Governor George A. Parks and Major Malcolm Elliott.

This collection contains playbills mostly from Greece and a few from other countries.

George Hafstad was a plant pathologist and a field technician with the U.S. Rubber Development Corporation in Brazil from 1943 to 1945. The George E. Hafstad Papers include a diary, several technician reports, and a folder of photographs from Hafstad's time as a field technician with the U.S. Rubber Development Corporation Amazon Division.